condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 16.922533333333334 0.0 50.7676 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 9.289603333333334 0.0 26.5313 Root 7.04181 0.0 11.2315